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Communication Networks
Question 1 Suppose that packets arrive from various sources to a statistical multiplexer that transmits the packets over a 64 kbps PPP link. Suppose that the PPP frames have lengths that follow an exponential distribution with mean 1000 bytes and that the multiplexer can hold up to 100 packets at a time. Plot the average packet delay as a function of the packet arrival rate.
Question 2 Consider a bidirectional link that uses Go-Back-N with N = 3. Suppose that frames from station A to station B are one unit long and that they use a time-out value of 2, and that frames in the opposite directions are 2.5 units long and that they use a time-out value of 4. Assume propagation and processing times are negligible, that the stations have an unlimited number of frames ready for transmission, and that all ACKs are piggybacked onto information frames. Assuming stations, A and B begin with their sequence numbers set to zero, show the pattern of transmissions and associated state transitions that result if there are no transmission errors.
This difference is the same for any pair of potentials no matter what vertex we start with (and no matter what value we assign it), so our choice of starting vertex and value is immaterial.
Using both pseudo code and a flowchart, describe a general algorithm for adding two fractions.
Write a Java method which takes an integer array parameter and fills the array with random numbers between 1 and 1000, including 1 and 1000.
Explain how separation of policy and mechanism aids in building microkernel-based operating systems.
Has its creation increased or decreased the need for organizations to maintain secure operation of their systems? Why?
During the first four months of the year, Jack earned $1320, $800, $1340, and $530. If Jack must have an average salary of at least $960 in order to earn retirement benefits. What must Jack earn in the fifth month in order to qualify for benefits?
Your input file or files must have at least ten student names, their scores, and their finals. Again, the calculations (processing) should remain the same. Submit the Visual Logic flowchart and associated input text files.** will provide instructor V..
Passing a sinusoidal voltage A sin ωt through a half-wave rectifier produces the clipped sine wave shown in Figure 7.13. Determine a Fourier series expansion of the rectified wave.
Where would database processing systems and spreadsheets fit into the organizational strategy
Learn about a key escrow encryption scheme (for example, Clipper). What are the pros and cons of key escrow?
Both Android and iOS are operating systems developed for a primary purpose to be used for mobile devices. While Android is developed by Google, iOS is developed by Apple.
which files match with the pattern " file[ABC] "
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